JP2006123858A - Wheel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wheel capable of reducing generation of columnar resonance in an air chamber, without causing the new problem such as impairing attachment-detachment of a tire to a wheel. <P>SOLUTION: This wheel 10 has the wheel 11 installed in a wheel shaft hub by a disc part 11a, and the tire 12 installed in a rim part 11b of this wheel 11 and forming the air chamber R by the rim part 11b. An air passage P1 communicating with the air chamber R by a rim side end part, is formed in a plurality of spoke parts 11c for connecting the disc part 11a and the rim part 11b of the wheel 11, and the respective air passages P1 are communicated and connected via a deformed communication passage. The deformed communication passage is composed of an annular passage P2 formed in the disc part 11a and communicating and connecting a disc side end part of the respective air passages P1, and a plurality of diametrally different orifices O1 to O6 interposed in this annular passage P2 and making different the passage resistance between the respective air passages P1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a wheel, and more particularly to a wheel employed in a vehicle such as an automobile.

For example, as shown in Patent Document 1 below, a wheel employed in a vehicle such as an automobile includes a wheel that is assembled to the axle hub at the disk portion, and a rim portion that is assembled to the rim portion of the wheel. And a tire forming an air chamber (internal space).
Japanese Utility Model Publication No. 2-30704

  In the wheel described in Patent Document 1 described above, a partition that divides the air chamber into a radially outer main chamber and a radially inner subchamber is provided on the outer periphery of the rim portion of the wheel, and the partition includes a main chamber. And the sub-chamber are connected to each other, and the air column resonance generated in the air chamber can be reduced. The air column resonance in the air chamber is that when the tire rolls, a portion where the pressure rises locally due to contact with the ground and a low portion are formed in the air chamber, and a standing wave is formed. Caused by.

  By the way, in the wheel described in the above-mentioned patent document 1, since the partition which divides an air chamber into a main chamber and a subchamber is provided in the outer periphery of the rim | limb part of a wheel, there exists a possibility of damaging the attachment or detachment to the wheel of a tire. In addition, there is a new problem that the partition wall may come off from the outer periphery of the rim due to centrifugal force during high-speed traveling.

  The present invention has been made to solve the above-described problem, and an air chamber is formed by a wheel that is assembled to the axle hub by a disk portion and a rim portion that is assembled to the rim portion of the wheel. In the wheel provided with the tire, an air passage communicating with the air chamber is formed at each of the plurality of spoke portions connecting the disk portion and the rim portion of the wheel at the rim side end portion. These are characterized in that they are connected to each other via an irregularly shaped communication path.

  In this wheel, when the tire rolls, a portion where the pressure rises locally due to contact with the ground and a portion where the pressure rises are formed in the air chamber as in the conventional case. However, since the local pressure increase propagates from the air chamber through the air passage formed in the plurality of spokes to the irregular communication passage at different speeds, a standing wave is hardly formed in the air chamber. It is possible to reduce the occurrence of air column resonance.

  By the way, in this wheel, the occurrence of air column resonance in the air chamber is reduced by the air passages formed in the plurality of spoke portions and the irregular communication passages that connect these air passages. The part does not require any work other than opening one end of each air passage. Therefore, with this wheel, it is possible to reduce the occurrence of air column resonance in the air chamber without causing the above-described new problem.

  In carrying out the present invention, the deformed communication path is formed in the disk portion and is connected to the disk side end of each of the air paths, and the each of the air passages is interposed in each of the annular paths. It is also possible to have a plurality of different-diameter orifices with different passage resistances between the air passages. Each of the different-diameter orifices can be a variable orifice whose orifice diameter changes according to the vehicle speed or elapsed time. It is. In this case, it is possible to effectively reduce the occurrence of air column resonance in the air chamber by appropriately setting the orifice diameter.

  Further, the present invention provides a wheel including a wheel assembled at a disk portion to an axle hub and a tire that is assembled to a rim portion of the wheel and forms an air chamber by the rim portion. An air passage communicating with the air chamber is formed at each rim side end portion in a plurality of spoke portions connecting the disc portion and the rim portion, and the shape or volume of each air passage is made different. There is a feature.

  In this wheel, when the tire rolls, a portion where the pressure rises locally due to contact with the ground and a portion where the pressure rises are formed in the air chamber as in the conventional case. However, since the local pressure increase propagates from the air chamber to the air passages formed in the plurality of spoke portions at different speeds, standing waves are not easily formed in the air chamber, and air column resonance in the air chamber is difficult to form. It is possible to reduce the occurrence.

  By the way, in this wheel, the occurrence of air column resonance in the air chamber is reduced by the air passages formed in the plurality of spoke portions, except that one end portion of each air passage is opened in the rim portion of the wheel. No need to craft. Therefore, with this wheel, it is possible to reduce the occurrence of air column resonance in the air chamber without causing the above-described new problem.

  In carrying out the present invention, it is also possible to connect the end portions on the disk side of each air passage through an annular passage formed in the disk portion. In this case, since the local pressure increase can be propagated from the air chamber to the annular passage through the air passage formed in the plurality of spoke portions, compared to the case where the annular passage is not provided in the disk portion of the wheel. The occurrence of air column resonance in the air chamber can be effectively reduced.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 schematically shows a first embodiment of a wheel according to the present invention. In this first embodiment, a wheel 10 is constituted by a wheel 11 and a tire 12. The wheel 11 includes a disk portion 11a and a rim portion 11b, and also includes a plurality of (six) spoke portions 11c that connect the disk portion 11a and the rim portion 11b. ). The tire 12 is airtightly assembled to the rim portion 11 b of the wheel 11, and an annular air chamber R is formed by the rim portion 11 b of the wheel 11.

  By the way, in the first embodiment, an air passage P1 is formed in each spoke portion 11c of the wheel 11, and an annular passage P2 is formed in the disc portion 11a of the wheel 11. Each air passage P1 is formed in the same shape, extends in the radial direction of the wheel 11, and communicates with the air chamber R at the rim side end.

  In the annular passage P2, the disk-side end portions of the air passages P1 are connected to each other at substantially equal intervals in the circumferential direction, and there are six fixed portions so as not to overlap the connection portions with the air passages P1. Orifices O1 to O6 are interposed at substantially equal intervals in the circumferential direction. The fixed orifices O1 to O6 have different orifice diameters (passage cross-sectional areas) and different passage resistances between the air passages P1, and communicate with the air passages P1 through the annular passages P2. An irregular communication path to be connected is formed.

  In the wheel 10 of the first embodiment configured as described above, when the tire 12 rolls, a portion where the pressure rises locally due to contact with the ground and a low portion are formed in the air chamber R as in the conventional case. Is done. However, the local pressure increase propagates from the air chamber R through the air passage P1 formed in the plurality of spoke portions 11c to the irregular communication passage, that is, the annular passage P2 and the fixed orifices O1 to O6 at different speeds. Therefore, a standing wave is not easily formed in the air chamber R, and the occurrence of air column resonance in the air chamber R can be reduced.

  By the way, in this wheel 10, an air chamber P1 is formed by a plurality of spoke portions 11c, and an irregular communication passage (annular passage P2 and fixed orifices O1 to O6) that connects these air passages P1 in communication with each other. The occurrence of air column resonance in R is reduced, and the rim portion 11b of the wheel 11 does not require any work other than opening one end portion of each air passage P1. Therefore, in this wheel 10, it is possible to reduce the occurrence of air column resonance in the air chamber R without causing the above-described new problem.

  Further, in the wheel 10 of the first embodiment, an odd-shaped communication passage that communicates and connects each air passage P1 is formed with the annular passage P2 that is formed in the disk portion 11a and communicates and connects the disk side end of each air passage P1. A plurality of different-diameter fixed orifices O1 to O6 that are interposed in the annular passage P2 and have different passage resistances between the air passages P1 are formed. For this reason, it is possible to effectively reduce the occurrence of air column resonance in the air chamber R by appropriately setting the orifice diameters of the fixed orifices O1 to O6.

  In the first embodiment described above, six fixed orifices O1 to O6 are interposed in the annular passage P2, but a variable orifice may be used instead of these fixed orifices O1 to O6. Is possible. In this case, if each variable orifice is configured to operate by receiving a signal from a transmitter provided on the vehicle body side, the orifice diameter of each variable orifice can be changed according to the vehicle speed or elapsed time. is there.

  FIG. 2 schematically shows a second embodiment of a wheel according to the present invention. In this second embodiment, the wheel 10 is constituted by a wheel 11 and a tire 12. The wheel 11 includes a disk portion 11a and a rim portion 11b, and also includes a plurality of (six) spoke portions 11c that connect the disk portion 11a and the rim portion 11b. ). The tire 12 is airtightly assembled to the rim portion 11 b of the wheel 11, and an annular air chamber R is formed by the rim portion 11 b of the wheel 11.

  Incidentally, in the second embodiment, air passages P1a to P1f are formed in the spoke portions 11c of the wheel 11, respectively, and an annular passage P2 is formed in the disc portion 11a of the wheel 11. Each of the air passages P1a to P1f is formed in a shape having a different passage shape and passage volume, extends in the radial direction of the wheel 11, and communicates with the air chamber R at the rim side end. The annular passage P2 communicates and connects the end portions of the air passages P1a to P1f on the disk side at substantially equal intervals in the circumferential direction.

  In the wheel 10 of the second embodiment configured as described above, when the tire 12 rolls, a portion where the pressure rises locally due to contact with the ground and a low portion are formed in the air chamber R as in the conventional case. Is done. However, since the local pressure increase propagates from the air chamber R to the air passages P1a to P1f formed in the plurality of spoke portions 11c at different speeds, a standing wave is hardly formed in the air chamber R. It is possible to reduce the occurrence of air column resonance in the air chamber R.

  By the way, in this wheel 10, generation | occurrence | production of the air column resonance in the air chamber R is reduced by each air passage P1a-P1f formed in the some spoke part 11c, and each rim part 11b of the wheel 11 has each air No work is required other than opening one end of the passages P1a to P1f. Therefore, in this wheel 10, it is possible to reduce the occurrence of air column resonance in the air chamber R without causing the above-described new problem.

  Further, in the wheel 10, the disk side end portions of the air passages P1a to P1f are connected in communication through an annular passage P2 formed in the disk portion 11a. For this reason, a local pressure rise can be propagated from the air chamber R to the annular passage P2 through the air passages P1a to P1f formed in the plurality of spoke portions 11c. It is possible to effectively reduce the occurrence of air column resonance in the air chamber R as compared with the case where no is provided.

  In each of the above-described embodiments, the air passages (P1 or P1a to P1f) are connected in communication by the annular passage P2 formed in the disk portion 11a of the wheel 11, but the bridge is formed between the spoke portions 11c. It is also possible to carry out by connecting each air passage (P1 or P1a to P1f) in communication with a pipe. Moreover, in each above-mentioned embodiment, although it implemented by forming the air path (P1 or P1a-P1f) in all the spoke parts 11c in the wheel 11, it implements by forming an air path only in an appropriate spoke part. It is also possible.

1 is a side view schematically showing a first embodiment of a wheel according to the present invention. It is a side view which shows schematically 2nd Embodiment of the wheel by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Wheel, 11 ... Wheel, 11a ... Disc part, 11b ... Rim part, 11c ... Spoke part, 12 ... Tire, P1 ... Air passage, P2 ... Annular passage, O1-O6 ... Fixed orifice (different diameter orifice), P1a ~ P1f ... Air passage, R ... Air chamber

Claims (5)

  A wheel having a wheel assembled at a disk part to an axle hub and a tire that is assembled to a rim part of the wheel and forms an air chamber by the rim part, the disk part and the rim part of the wheel A plurality of spoke portions that connect the air chambers are formed with air passages that communicate with the air chambers at the rim side end portions, and the air passages are connected to each other via irregularly shaped communication passages. Wheels to play.   2. The wheel according to claim 1, wherein the odd-shaped communication path is formed in the disk portion and communicates with a disk-side end portion of each of the air paths, and is interposed in the ring-shaped path. A wheel characterized by comprising a plurality of different diameter orifices that make the passage resistance between the air passages different.   3. The wheel according to claim 2, wherein each of the different diameter orifices is a variable orifice whose orifice diameter changes according to a vehicle speed or an elapsed time.   A wheel having a wheel assembled at a disk part to an axle hub and a tire that is assembled to a rim part of the wheel and forms an air chamber by the rim part, the disk part and the rim part of the wheel A wheel characterized in that an air passage communicating with the air chamber is formed at a rim side end portion in a plurality of spoke portions connecting the two, and the shape or passage volume of each air passage is different. 5. The wheel according to claim 4, wherein a disk side end portion of each air passage is connected in communication through an annular passage formed in the disk portion.

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